Fellow’s upset about rebuke for heavenly figure (6)
I believe the answer is:
seraph
'heavenly figure' is the definition.
(I've seen this in another clue)
'fellow's upset about rebuke' is the wordplay.
'fellow's' becomes 'hes' (I've seen this in other clues).
'upset' says the letters should be written backwards.
'about' is an insertion indicator.
'rebuke' becomes 'rap' (rap is a kind of rebuke).
'hes' written backwards gives 'seh'.
'seh' going around 'rap' is 'SERAPH'.
'for' is the link.
(Other definitions for seraph that I've seen before include "Angel - phrase (anag)" , "Heavenly creature" , "Angelic type" , "Angel of highest order" , "Angelic character" .)